Measurement correcting system and method thereof

Abstract

A measurement correcting system including a field measuring unit and a processing unit is provided. The field measuring unit simultaneously senses a first signal to be measured and a second signal to be measured which have opposite polarities and substantially the same magnitude, and generates a first output signal and a second output signal correspondingly. The processing unit determines the first signal to be measured according to the first output signal and the second output signal. A measurement correcting method is also provided.

1 . A measurement correcting system, comprising:
 a field measuring unit, simultaneously sensing a first signal to be measured and a second signal to be measured, and correspondingly generating a first output signal and a second output signal, wherein the first signal to be measured and the second signal to be measured have opposite polarities and substantially the same magnitude; and   a processing unit, determining the first signal to be measured according to the first output signal and the second output signal.   
     
     
         2 . The measurement correcting system as claimed in  claim 1 , wherein the field measuring unit comprises a first field measuring probe and a second field measuring probe, the first field measuring probe senses the first signal to be measured, and the second field measuring probe senses the second signal to be measured. 
     
     
         3 . The measurement correcting system as claimed in  claim 2 , wherein the field measuring unit further comprises:
 a first transmission line, electrically connected between the first field measuring probe and the processing unit; and   a second transmission line, electrically connected between the second field measuring probe and the processing unit, wherein the first transmission line and the second transmission line have the same size and the same length, and are arranged in parallel, so that the first signal to be measured and the second signal to be measured that are measured by the field measuring unit have substantially the same magnitude.   
     
     
         4 . The measurement correcting system as claimed in  claim 1 , wherein the first field measuring probe and the second field measuring probe are arranged in mirror symmetric, so that the first signal to be measured and the second signal to be measured that are measured by the field measuring unit have opposite polarities. 
     
     
         5 . The measurement correcting system as claimed in  claim 1 , wherein the processing unit calculates a difference between the first output signal and the second output signal, and divides the difference by two, so as to obtain the first signal to be measured. 
     
     
         6 . The measurement correcting system as claimed in  claim 1 , wherein the processing unit calculates an arithmetic average of the first output signal and the second output signal to obtain an interference noise. 
     
     
         7 . The measurement correcting system as claimed in  claim 6 , wherein the interference noise comprises a common mode signal and a differential mode signal. 
     
     
         8 . A measurement correcting method, comprising:
 simultaneously sensing a first signal to be measured and a second signal to be measured to correspondingly generate a first output signal and a second output signal, wherein the first signal to be measured and the second signal to be measured have opposite polarities and substantially the same magnitude; and   determining the first signal to be measured according to the first output signal and the second output signal.   
     
     
         9 . The measurement correcting method as claimed in  claim 8 , wherein a method for simultaneously sensing the first signal to be measured and the second signal to be measured comprises arranging a first field measuring probe and a second field measuring probe of a field measuring unit in mirror symmetric, so as to measure the first signal to be measured and the second signal to be measured that have opposite polarities. 
     
     
         10 . The measurement correcting method as claimed in  claim 9 , wherein a method for simultaneously sensing the first signal to be measured and the second signal to be measured comprises arranging a first transmission line and a second transmission line of the field measuring unit in parallel, so as to measure the first signal to be measured and the second signal to be measured that have substantially the same magnitude, wherein the first transmission line and the second transmission line are respectively electrically connected to the first field measuring probe and the second field measuring probe, and sizes and lengths of the first transmission line and the second transmission line are substantially the same. 
     
     
         11 . The measurement correcting method as claimed in  claim 8 , wherein the step of determining the first signal to be measured according to the first output signal and the second output signal comprises calculating a difference between the first output signal and the second output signal, and divides the difference by two, so as to obtain the first signal to be measured. 
     
     
         12 . The measurement correcting method as claimed in  claim 8 , further comprising calculating an arithmetic average of the first output signal and the second output signal to obtain an interference noise. 
     
     
         13 . The measurement correcting method as claimed in  claim 12 , wherein the interference noise comprises a common mode signal and a differential mode signal.